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T. J. REYNOLDS.

MEANS FOR PREVENTING INURUSTATION IN BOILERS. No. 324,596.

Patented Aug. 18,1885

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THOMAS J. REYNOLDS, OF BROOKLYN, NEW YORK, ASSIGNOR OF ONE-HALF TO FRANCIS NOLAN, OF SAME PLACE.

MEANS FOR PREVENTING INCRUSTATION IN BOILERS.

SPECIFICATION forming part of Letters Patent No. 324,596, dated August 18, 188 5.

Application filed May 1, 1885.

To It whom ii may concern-.-

Be it known that I, THOMAS J. REYNOLDS, of the city of Brooklyn, in the county of Kings and State ofNew York, have invented 5 a new and useful Improvement in Means for Preventing Incrustation in Steam'Boilers and other Vessels for Evaporating Liquid, of which the following is a specification.

My invention relates more particularly to feed-water heaters for steam-boilers in which the feed-water is heated and caused to deposit its foreign matters before being discharged into the boiler; but the invention may also, with advantage, be employed in connection I with oil-stills and other evaporating apparatus, for the purpose of causing the deposit of for eign matter from the oil or other liquid before it is delivered into the still or evaporatingvessel.

The invention consists iii the combination, with a steam-boiler or other evaporating-vessel, of a liquid-heater consisting of a shell or casing arranged within the shell of the boiler or vessel, and preferably below the liquidlevel therein, afeed-pipe leading to theheater shell or casing and a pipe leading from the heater shell or casing for delivering thcliquid into the boiler or evaporating-vessel after it has passed through the heater shell or casing.

The heater shell or casing may be of any suitable form; but I prefer that it shall be made in the form of a largetube or flue extending from end to end of the boiler or vessel, and pro vided at one end and near its top with a feedpipe, and at the other end and near its top with a pipe for conducting liquid from the heater into the boiler or vessel proper. The liquid will then have a very sluggish flow through the large tube or flue, and will be caused to deposit therein foreign matters held in suspension. The above and other combinations of parts are included in my invention.

In the accompanying drawings, Figure 1 represents alongitudinal vertical section of a 5 multitubular steam-boiler embodying my invention, and Fig. 2 represents an end elevation of such boiler.

Similar letters of reference designate corresponding parts in both figures.

A designates the boiler, which is of the or- (No model.)

dinary return tubular type. a designates the fire-tubes,through which the heated products of combustion pass from the rear to the front end of the boiler.

13 designates the feed-water heater and repository for foreign matters, which constitutes the principal feature of my invention. This consists of a large tube or flue arranged lengthwise within the boiler and extending from end to end thereof. The ends of this tube or flue B are flanged, as shown at b, and are riveted fast to the heads of the boiler, said heads being provided with openings at, opposite the ends of the large tube or flue B. I have also here represented a cap or oover,G, bolted to the outside of each head,so as to cover the hole or opening a, and forming a watertightjoint at the end of the tube or line B.

The tube or flue B is arranged Within the shell of the boiler in all cases, and is submerged in the water contained therein, said tube or flue being preferably arranged near the bottom of the boiler. At one end of the boiler is a feed-pipe, D, which is connected with the end of the tube or flue B near the upper side thereof, and at the other end of the boiler is adischarge-pipe, E, also leading from a point near the upper side ofthe tube or flue B, and me tending into the steam or water space of the boiler.

I have also shown blow-off pipes F G, leading from opposite ends of the tube or flueB at points at or near thelower side thereof. These several pipes D E F G may be connected securely with the heads or caps O, which arere- 8 5 movably attached to the ends of the boiler.

For a boiler of ordinary size the tube or fine B may be, for example, about twelve inches in diameter; and hence it will be seen that the feed-Water introduced through the pipeD will have a very sluggish flow through the tube or flue B, and will be therein heated by the surrounding water of the boiler and caused to deposit foreign matters which may be contained in suspension within the tube or flue B, and before such water is delivered through the pipe E into the boiler A.

WVhen it is desired to remove such foreign matters as may be deposited in the tube or fine B, the feedpipe I) will be closed, and steam I00 from the boiler will be delivered through the pipe E into one end of the tube or flue B. and will blow off the foreign matters through the blow-off pipe F at the opposite end of such flue or tube.

When itis desired to wash out the line or tube B, the valve 6 in the pipe E is to be closed, and then,by admitting feed-water through the pipe D the solid contents of the tube or flue B may be washed out through the pipe G at the opposite end thereof.

I have also shown the boiler as provided at oppositeends with ordinary blow-off pipes, H, at the bottom thereof and below the tube or flue B; but inasmuch as a large part of the foreign matter will be deposited in the tube or fine B and blown off therefrom, the blowoff pipes H, leading from the boiler proper, may be used to blow off the boiler much less frequently than heretofore.

If it be desired to discontinue the use of the tube or fine B as a feed-water heater and repository, the heads or caps C may be removed. and the tube or flue B will then serve as a heating-flue for the boiler.

Where my invention is to be applied to existing boilers of any make and in any position, I may insert therein a tube or flue which will communicate at one end with the ordinary man-hole near the bottom of the boiler, and may be attached to the opposite head of the boiler.

v I desire to include in my invention a casing or shell of any description or form arranged within the shell of a boiler, into which the feed water or liquid is delivered, and from which the purified feed water or liquid is dis charged into the boiler proper.

I may, if desired, introduce into the pipe E, through which water is discharged into the boiler, a filter, E, which may be of any suitable construction and packed with any suitable filtering material. This filter will catch and retain impurities in the water which may not be deposited in the heater-shell B.

My invention may be employed in connection with oil-stills and other evaporating-vessels wherein liquid is heated and into which liquid is fed either continuously or periodically.

I am aware that it is not new to employ in connection with a steam-boiler a cylindric feedwater heater constructed with steamchainbers at the ends, and heating-tubes connecting such steam-chambers, such heater being arranged externally to and parallel with the boiler. My invention differs from this in that I arrange the heater wholly within the shell of the boiler and submerged in the hot water therein. This combination enables me to employ aheater consisting of a single tube or flue of sutficiently large size and without any internal chambers or tubes. Such a construction is desirable because of its simplicity and cheapness, and because of the ease with which the large single tube or flue which constitutes the heater may be cleaned.

What I claim as my invention, and desire to secure by Letters Patent, is

l. The combination, with an evaporating- Vessel, of a liquid-heater consisting of a shell or easing arranged within the vessel and preferably below the liquid-level, a feed-pipe connected with such heater shell or casing. and a pipe extending from such heater shell or casing into the vessel fordeliveringliquid therein from the heater shell or casing, substantially as and for the purpose herein described.

2. The combination, with an evaporatingvessel, of a tube or flue extending lengthwise therein and closed at the ends, a feed-pipe communicating with one end of the tube or flue. and a pipe extending from the othercnd of the tube or flue into the evaporating-vessel, substantially as and for the purpose herein described.

3. The combination. with an evaporatingvessel, of the tube or flue B, extending lengthwise within the said vessel and closed at the ends, the feed-pipe D, connected with one end of the tube or line at the top thereof, and the pipe E, leading from the other end of the tube or flue at the top thereof into the evaporatingvessel, substantially as and for the purpose herein described.

4. The combination, with the evaporatingvessel A, of the tube or flue B, and feed and discharge pipes D E, communicating at opposite ends with the top of said tube or flue, and the blow-off pipes F G, leading from the opposite ends of the tube or flue at the bottom thereof, substantially as herein described.

THOS. J. REYNOLDS.

\Vitnesses:

FRANCIS NOLAN, O. HALL. 

